[Qgis-developer] Old styles not shown?

Matthias Kuhn matthias.kuhn at gmx.ch
Thu May 22 04:53:15 PDT 2014

That means for somebody to be required to first install an intermediate 
software before the release - which might not even be easily available.

I think we can do that for QGIS 3 and maybe for some rare cases before, 
but to be able to migrate from something saved with a software being 
the last stable not even 12 months ago sounds not optimal to me.

I don't know how much work is involved in this particular case, so I 
really can't tell for sure, but this sounds like a rather serious issue.
I have inserted a new class QgsLegacyHelpers (going to be committed 
with my update later today) which is meant to contain code for such 
situations and does all the update for forms to the new system, but it 
would be good to have other mappings in there as well.

In short: if there's not an incredibly huge amount of work or other 
good reasons, in terms of user satisfaction, I'd be all in favor of 
providing an easy upgrade path throughout a major release cycle (2.x 

-- Matthias

On Thu 22 May 2014 01:30:28 PM CEST, Andreas Neumann wrote:
> Hi,
> Can't we just say that old styling and old labeling does not work anymore?
> As a migration path someone could use QGIS 2.0 or QGIS 2.2.
> Andreas
> Am 22.05.2014 11:08, schrieb Paolo Cavallini:
>> Hi all.
>> Just compiled and installed current master. Loading stylized data I get
>> Warning: Loading a style file that was saved with an older version of qgis (saved in
>> 1.8.0-Lisboa, loaded in 2.3.0-Master). Problems may occur.
>> and nothing is displayed. Switching back to single symbol does not solve the problem.
>> Loading non stylized data works fine.
>> Anything I should investigate more to pin down the issue?
>> All the best.
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